Safe boost increase w/ race gas?
Apr 13, 2006, 07:12 PM
#31
Originally Posted by Jeff_Jeske
You dont need to reset the ECU to run more boost. Don't worry about it.
As for the % question. When I run 100 octane I pull 4% fuel to get to 12.0:1 AFR. I was wondering how much fuel you pull when you run 114 or C16.
As for the % question. When I run 100 octane I pull 4% fuel to get to 12.0:1 AFR. I was wondering how much fuel you pull when you run 114 or C16.
Apr 13, 2006, 10:43 PM
#32
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Originally Posted by nj1266
I assume that you run 12.5 when you are drag racing and not when you are road racing. I read that road racing/hotlapping requires lower AFRs than drag racing. I would imagine that 11-11.5 would be good for a 20 min road racing/hotlapping with 100 octane gas.
Apr 13, 2006, 11:08 PM
#33
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Originally Posted by nj1266
What do you mean by fuel? Do you mean the MAF table in the Xede? Do you pull 4% over and above what is already pulled for a 91-93 octane map? I just want to know since I also have an Xede and I want to learn more.
Yep, that's a good rule of thumb when making a race gas map. Yank 4% fuel under boost. Zero out your timing offset map. And put 100% in your boost map. Usually worth 30-35whp over the pump gas map.
-shiv
Apr 14, 2006, 11:28 AM
#34
Originally Posted by shiv@vishnu
Yep, that's a good rule of thumb when making a race gas map. Yank 4% fuel under boost. Zero out your timing offset map. And put 100% in your boost map. Usually worth 30-35whp over the pump gas map.
-shiv
-shiv
Apr 14, 2006, 11:41 AM
#35
Originally Posted by nj1266
Does such a map apply for road racing? Or is this only for drag racing?
When dyno'ing my V390 car I found them to be a bit too lean for my liking but then again I have more supporting mods than the standard V390 map was built for. To up the safety margine when road racing I usually add a few gallons of 103 octane street blaze.
My problem with the race gas map is that I'm already at 100% boost on my 93 octane map. My engine doesn't see EXTRA boost from 5000-7800 rpm. The only gains I am getting from my race gas map is a leaner AFR (4%) and zero'd timing which is about 3 degrees after 6000 rpm.
Aside from rigging up a way to run more boost how can I further exploit the race gas map?
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